RadioFrame Networks Inc DH2 User Manual
Method of Procedure
System Description
System Description
16
RFN_3.1 Beta
2.1.3.1 Rectifier
The DC power supply is a PECO II 127NHL Low Profile -48 VDC, 20 to 60 Amp
power system, which converts 85 to 265 VAC to -48 VDC using one or two 30
Amp Modular Rectifiers (20 Amp output with a 115 VAC @ 15 Amp input circuit).
The rectifiers can be paralleled for increased power and redundancy and are
capable of "Hot Insertion".
power system, which converts 85 to 265 VAC to -48 VDC using one or two 30
Amp Modular Rectifiers (20 Amp output with a 115 VAC @ 15 Amp input circuit).
The rectifiers can be paralleled for increased power and redundancy and are
capable of "Hot Insertion".
The Low Profile plant is self-contained and includes DC Distribution plus a
system Simple Controller. Each rectifier module contains a micro-controller,
which monitors internal temperatures, voltages and currents, and makes
adjustments to reliably deliver maximum output power.
system Simple Controller. Each rectifier module contains a micro-controller,
which monitors internal temperatures, voltages and currents, and makes
adjustments to reliably deliver maximum output power.
Rectifier modules digitally exchange status data with the Simple Controller via a
data bus. The system Simple Controller evaluates all data, displays rectifier and
system parameters, compensates the battery voltage for temperature, extends
alarms and provides access to changing setpoints and system status. Monitors
for battery string temperature and midpoint are optional. Connections have been
connectorized to facilitate installation.
data bus. The system Simple Controller evaluates all data, displays rectifier and
system parameters, compensates the battery voltage for temperature, extends
alarms and provides access to changing setpoints and system status. Monitors
for battery string temperature and midpoint are optional. Connections have been
connectorized to facilitate installation.
Basic Design
Basic features of all 127NHL plant include Distribution, a Distribution Monitor and
a Simple Controller. The Distribution Monitor provides fuse alarm inputs, plant
voltage and current monitoring, low voltage disconnect control, and battery
monitoring. With the optional Battery Temperature Compensation kits, the
127NHL plant can monitor up to two strings of batteries and adjust rectifier output
voltage to compensate for battery temperature, reducing the potential for VLRA
battery thermal runaway and potentially extend battery life.
a Simple Controller. The Distribution Monitor provides fuse alarm inputs, plant
voltage and current monitoring, low voltage disconnect control, and battery
monitoring. With the optional Battery Temperature Compensation kits, the
127NHL plant can monitor up to two strings of batteries and adjust rectifier output
voltage to compensate for battery temperature, reducing the potential for VLRA
battery thermal runaway and potentially extend battery life.
The plant Simple Controller is the user interface and collects and reports
monitored signals and alarms. A local display provides a visual indication of plant
status, alarm conditions and plant settings as well as status of each individual
rectifier. The user interface supports the adjustment of setpoints and changing
plant status (i.e. Enter Equalize mode).The controller provides two Form C
contacts for PMN (Plant Minor)and PMJ (Plant Major) alarms plus a Maintenance
Port for a PC interface. PC Interface software and cabling kit is an available
option.
monitored signals and alarms. A local display provides a visual indication of plant
status, alarm conditions and plant settings as well as status of each individual
rectifier. The user interface supports the adjustment of setpoints and changing
plant status (i.e. Enter Equalize mode).The controller provides two Form C
contacts for PMN (Plant Minor)and PMJ (Plant Major) alarms plus a Maintenance
Port for a PC interface. PC Interface software and cabling kit is an available
option.
For more information, refer to the product specification information provided by
Peco II, Inc., the rectifier manufacturer: PEC 127NHL.
Peco II, Inc., the rectifier manufacturer: PEC 127NHL.
2.1.3.2 Battery
Plant
The main equipment cabinet relies on an 8-hour backup system. The equipment
cabinet requires the following components that will define the Battery Plant.
cabinet requires the following components that will define the Battery Plant.
•
2 Strings of -48 Volts 105 Amp Capacity Battery, such as Deka or Power
Batteries (or other approved vendors)
Batteries (or other approved vendors)